custom XCR-L long upper

[navalbeaver]

Ah! Multiple typos and multiple misunderstandings - including mine!
I can check that this evening - the fit I mean, taking measurements.
Hmmm. I could probably pull the type 3 off the Blackout and see if it'd run on the type 2 5.56 barrel.
That'd mean I had to pull can mounts though.....

I'd have tried this earlier but the Gas tube is the issue. The Type 3 is a little longer so you need a different length tube. I don't have any of those yet. They're on order.

[Sean K.]

Ah! Multiple typos and multiple misunderstandings - including mine!
I can check that this evening - the fit I mean, taking measurements.
Hmmm. I could probably pull the type 3 off the Blackout and see if it'd run on the type 2 5.56 barrel.
That'd mean I had to pull can mounts though.....

Don't go to any trouble....it's not that big of a deal. I was just wondering in terms of backwards and future compatibility.

[Sean K.]

I'd have tried this earlier but the Gas tube is the issue. The Type 3 is a little longer so you need a different length tube. I don't have any of those yet. They're on order.

So the piston's the same and the gas tube needs to be longer? Guess it makes sense with the new design of the type 3 block.

[navalbeaver]

The type 3 gas block extends further to the rear. The tube needs to be a little shorter.